1 files changed, 107 insertions, 0 deletions
diff --git a/Src/Agave/Metadata/ifc_metadataReader.h b/Src/Agave/Metadata/ifc_metadataReader.h
new file mode 100644
index 00000000..16749795
--- /dev/null
+++ b/Src/Agave/Metadata/ifc_metadataReader.h
@@ -0,0 +1,107 @@
+#ifndef NULLSOFT_AGAVE_METADATA_IFC_METADATAREADER_H
+#define NULLSOFT_AGAVE_METADATA_IFC_METADATAREADER_H
+
+#include <bfc/dispatch.h>
+
+class ifc_metadataReader : public Dispatchable
+{
+protected:
+	ifc_metadataReader()
+	{}
+	~ifc_metadataReader()
+	{}
+public:
+	/* If there are multiple values for the same field, these functions will concatenate the values in some
+	 manner as defined by the language pack */
+	int GetField( const wchar_t *field, wchar_t *destination, size_t destinationCch );
+	int GetFieldByKey( uint32_t field_key, wchar_t *destination, size_t destinationCch );
+
+	int GetIndexedField( const wchar_t *field, uint32_t index, wchar_t *destination, size_t destinationCch );
+	int GetIndexedFieldByKey( uint32_t field_key, uint32_t index, wchar_t *destination, size_t destinationCch );
+
+	class ifc_fieldEnumerator : public Dispatchable
+	{
+	protected:
+		ifc_fieldEnumerator();
+		~ifc_fieldEnumerator();
+
+	public:
+		const wchar_t *GetField();
+		uint32_t GetKey();
+		int Next();
+
+		DISPATCH_CODES
+		{
+			DISP_GETFIELD = 0,
+			DISP_GETKEY   = 1,
+			DISP_NEXT     = 2,
+		};
+
+	};
+
+	enum
+	{
+		ENUMERATORFLAG_MULTIPLE_FIELDS         = 0, // if multiple values of the same field are present, return each one
+		ENUMERATORFLAG_REMOVE_DUPLICATE_FIELDS = 1, // don't enumerate duplicate fields (with differing values)
+	};
+
+	ifc_fieldEnumerator *GetFieldEnumerator( int flags = ENUMERATORFLAG_MULTIPLE_FIELDS ); // Enumerate fields present in this file
+
+	DISPATCH_CODES
+	{
+		DISP_GETFIELD             = 0,
+		DISP_GETFIELDKEY          = 1,
+		DISP_GETINDEXEDFIELD      = 2,
+		DISP_GETINDEXEDFIELDBYKEY = 3,
+		DISP_GETFIELDENUMERATOR   = 4,
+	};
+
+	enum
+	{
+		NOT_IMPLEMENTED = -1,
+		SUCCESS         = 0,
+		FAILURE         = 1,
+		END_OF_ITERATOR = 2,
+	};
+};
+
+inline int ifc_metadataReader::GetField(const wchar_t *field, wchar_t *destination, size_t destinationCch)
+{
+	return _call(DISP_GETFIELD, (int)ifc_metadataReader::NOT_IMPLEMENTED, field, destination, destinationCch);
+}
+
+inline int ifc_metadataReader::GetFieldByKey(uint32_t field_key, wchar_t *destination, size_t destinationCch)
+{
+	return _call(DISP_GETFIELDKEY, (int)ifc_metadataReader::NOT_IMPLEMENTED, field_key, destination, destinationCch);
+}
+
+inline int ifc_metadataReader::GetIndexedField(const wchar_t *field, uint32_t index, wchar_t *destination, size_t destinationCch)
+{
+	return _call(DISP_GETINDEXEDFIELD, (int)ifc_metadataReader::NOT_IMPLEMENTED, field, index, destination, destinationCch);
+}
+
+inline int ifc_metadataReader::GetIndexedFieldByKey(uint32_t field_key, uint32_t index, wchar_t *destination, size_t destinationCch)
+{
+	return _call(DISP_GETINDEXEDFIELDBYKEY, (int)ifc_metadataReader::NOT_IMPLEMENTED, field_key, index, destination, destinationCch);
+}
+
+inline ifc_metadataReader::ifc_fieldEnumerator *ifc_metadataReader::GetFieldEnumerator(int flags)
+{
+	return _call(DISP_GETFIELDENUMERATOR, (ifc_metadataReader::ifc_fieldEnumerator *)0, flags);
+}
+
+inline const wchar_t *ifc_metadataReader::ifc_fieldEnumerator::GetField()
+{
+	return _call(DISP_NEXT, (const wchar_t *)0);
+}
+
+inline uint32_t ifc_metadataReader::ifc_fieldEnumerator::GetKey()
+{
+	return _call(DISP_NEXT, (int)ifc_metadataReader::NOT_IMPLEMENTED);
+}
+
+inline int ifc_metadataReader::ifc_fieldEnumerator::Next()
+{
+	return _call(DISP_NEXT, (int)END_OF_ITERATOR);
+}
+#endif
+\ No newline at end of file